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Vulnerability record · CVE-2026-48055 · published 17 June 2026

CVE-2026-48055: Improper input validation vulnerability

Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and prior, a high-severity Zip Slip vulnerability was identified in Streambert's subtitle extraction logic. The application does not sanitize archive entry filenames during extraction, allowing a malicious archive to perform path traversal and write arbitrary files to the host filesystem. The subtitle extraction process downloads a ZIP archive and extracts its entries. The destination file path is constructed by concatenating the raw archive entry name (extracted.name) directly to the temporary directory path. If a malicious ZIP archive containing directory traversal sequences is processed, it escapes the temporary directory boundaries. The application then writes the extracted payload anywhere on the host filesystem subject to the application's current write permissions. This issue has been fixed in version 2.5.0.

10.0 CVSS 3.1 Critical EPSS 0.99% · top 39.1% CWE-20 · Improper input validationCWE-22 · Path traversal Deferred
10.0CVSS 3.1 base score
0.99%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and prior, a high-severity Zip Slip vulnerability was identified in Streambert's subtitle extraction logic. The application does not sanitize archive entry filenames during extraction, allowing a malicious archive to perform path traversal and write arbitrary files to the host filesystem. The subtitle extraction process downloads a ZIP archive and extracts its entries. The destination file path is constructed by concatenating the raw archive entry name (extracted.name) directly to the temporary directory path. If a malicious ZIP archive containing directory traversal sequences is processed, it escapes the temporary directory boundaries. The application then writes the extracted payload anywhere on the host filesystem subject to the application's current write permissions. This issue has been fixed in version 2.5.0.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

References

LinkTags
https://github.com/truelockmc/streambert/releases/tag/2.5.0
https://github.com/truelockmc/streambert/security/advisories/GHSA-3q2x-3q9p-qwfc
https://github.com/truelockmc/streambert/security/advisories/GHSA-3q2x-3q9p-qwfc

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Source: NIST National Vulnerability Database (record CVE-2026-48055), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.